Attachment for blast-furnaces.



No. 826.819. PATENTED JULY 24, 1906.

' c. ABERCROMBIE.

ATTACHMENT FOR BLAST FURNACES.

APPLICATION FILED APR. 19, 1905.

2 SHEETS-SHEET 1,.

Whammy RMEIZZZZ PATENTED JULY 24, 1906.

(1. ABBRGROMBIE. ATTACHMENT FOR BLAST FURNACES.

APPLICATION FILED APB. 19, 1906 2 SHEETS-SHEET 2.

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PETERS co wasnmmau, D c.

UNITED STATES PATENT OFFlUE.

ATTACHMENT FOR Specification of Letters Patent.

BLAST-FURNACES.

Patented July 24, 1906.

Application filed April 19, 1905. Serial NO. 256,434-

To all whom it may concern:

Be it known that I, Cr-rARLEs ABERoRoMBIE, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in Attachments for Blast-Furnaces, of which the following is a specification.

This invention relates to attachments for blast-furnaces; and the object thereof is to provide means, hereinafter more specifically referred to, for removing the furnace-stock that may be carried away with the gases of blast-furnaces, so that the said gases can be supplied to the boilers and stoves free from fine dust or stored in such condition, and, furthermore, to provide means whereby the free discharge of the fine ore from the mouth of the furnace is taken care of, so as to prevent the discharge of the fine ore at the mouth of the furnace in clouds.

The invention further aims to construct an attachment for gas-furnaces for the purposes specified which shall be simple in its construction and arrangement, strong, durable, and efficient in its use, and comparatively in expensive to set up.

With the foregoing and other objects in view the invention consists of the novel construction, combination, and arrangement of parts hereinafter more specifically described, illustrated in the accompanying drawings; which form a part of this specification, and particularly pointed out in the claims hereunto appended.

In describing the invention in detail reference is had to the accompanying drawings, wherein like reference characters denote corresponding parts throughout the several views, and in which Figure 1 is a top plan view of the attachment set up in connection with a blast-furnace. Fig. 2 is a side elevation thereof. Fig. 3 isa section on line A B, and Fig. 4 is a section on line C D, Fig. 2.

Referring to the drawings by reference characters, 1 denotes the blastfurnace, and whichhas themouth thereof provided with explosion-doors of known construction. Communicating with the mouth of the furnace is a series of laterally-extending hollow extensions 2, 3, 4, and 5, which are adapted to receive the gases and furnace-stock, and

from there the said gases and furnace-stock are conducted in a manner as hereinafter referred to, so that the furnace-stock will be 1 removed from the gases and collected and the washed gases either conducted to a reservoir or to a boiler, as the case may be. The outer end of each of the extensions -2, 3, 4, and 5 is closed, and communicating with the said extensions is a pair of inclined primary conducting-pipes 6 7 and a pair of inclined secondary conducting-pipes 8 9 The con ducting-pipe 6 at its upper end opens into the extension 3, and intermediate its ends it communicates with the extension 2 through the medium of a branch pipe 10, which at its upper end opens into the extension 2 and at its lower end into the pipe 6. The pipe 8 at its upper end opens into the outer end of the extension 8 and intermediate its ends communicates with the extension 2 through the medium of a branch pipe 11, which opens at its upper end into the outer end of the extension 2 and at its lower end opens into the pipe 8. The conducting-pipe 7 at its upper end opens into the extension 4, and intermediate its ends it communicates with the extension 5 through the medium of a branch pipe 12, which at its upper end opens into the extension 5 and at its lower end into the pipe 7. The pipe 9 at its upper end opens into the outer end of the extension 4 and intermediate its ends communicates with the extens on 5 through the medium of a branch pipe 13, which opens at its upper end into the outer end of the extension 5 and at its lower end opens into the pipe 9.

Communicating with the conducting-pipes 6 7 at their lower ends is a furnace-stock catcher, and communicating with the pipes 8 9 at their lower ends is a furnace-stock collector. The furnace-stock catcher is indi cated by the reference character 14, and consists of a receptacle having an inclined bot-' tom 15 and a conical top 16. furnace-stock catcher, near the top thereof, is arranged a water-spray pipe 17, communicating with a water-supply 18. Also communicating with the top of the furnace-stock catcher is a gas-conducting pipe 19 for conducting the gases from the furnace-stock catcher to a boiler or stove, and, furthermore, communicating with the furnace-stock catcher is a gas-conducting pipe 20 for conducting the gases from the furnace-stock catcher to a reservoir. Within the furnacestock catcher is arranged a body of water, as at 21, and the said pipes 6 7 open into the furnace-stock catcher above the level of the Water 21. The furnace-stock catcher, at the Within the bottom thereof, is provided with an opening 22 for establishing communication between the said furnace-stock catcher and the furnace-stock collector, which is arranged at the side or the furnace-stock catcher and is indicated by the reference character 23 and is in the form of a well containing a body of water 24-, having a level the same as the level of the body of water 2].. The pipes 8 9 communicate with the furnace-stock collector, as at 25. The furnace-stock catcher is provided with a water-inlet valve, as at 26, for controlling the water-supply to compensate for lost water by leakage and maintain a constant level.

The secondary conducting-pipes 8 9 are provided to safeguard the furnace from destruction from violent internal explosions of gas, which take place at intervals at the top of the furnace, and at the same time recover the ore and coke which are thrown at present into the air through the medium of the reliefdoors. This fine ore floats in clouds for a long distance and soils and destroys vegetation or anything upon which it may settle. The relief-doors now employed are hinged doors which remain closed by their own weight and are used to relieve excess of pressure by providing an outlet to the air. This lnve'ntion proposes to do away with all relief- -doors at the furnace-top or elsewhere, the

secondary conducting-pipes 8 9 being employed in lieu of the relief-doors. Under ordinary working conditions the secondary conducting-pipes will not be in use. In case of a violent explosion or slip at the furnace-top the excess of gas would pass down the secondary conducting-pipes and bubble up through the water in the collector. The pressure would be relieved, and any dust, ore, or coke would be entrapped by the water. Under normal conditions the water serves as a valve to prevent escape of gas. Under or- ,dinary working conditions all gases pass down the conducting-pipes 6 and 7 and over the water contained in the stock-catcher. This water will entrap any heavy particles that may pass at any time during the opera tion of the furnace. Its level is below the point of communication of the primary conducting ipes with the stock-catcher, for the reason tliat a free outlet to the stoves and boilers must be provided. This outlet is insufficient to take care of an explosion, which in addition requires the relief furnished by the secondary pipes and the water seal. In order to insure quick removal of the fine dust from the gases, the spray-pipe 17 is provided,

. and the spraying of the gas in such manner serves to wash them and remove all dust that might otherwise pass into the gas-mains.

It will be evident from the foregoing construction that the discharge from the furnace is prevented from escaping into the air by the-conducting-pipes, which lead to the furnace-stock catcher and collector, these pipes conducting the gases in such manner that the water in the catcher and collector will remove the coke, ore, and flue-dust that may be contained in the gases. The matter which is caught in the furnace-stock catcher flows by gravity into the furnace-stock collector. This is evident, owing to the inclined bottom 15 of the furnace-stock catcher. From the collector the material can easily be removed by means of a grab-bucket.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. An attachment for blast-furnaces comprising a plurality of primary conductingpipes adapted to communicate with the furnace, a furnace-stock catcher into which the said pipes open, a furnace-stock collector communicating with the furnace stock catcher, a pair of secondary conductingpipes communicating with the collector and adapted to communicate with the furnace, said collector and catcher containing a body of water of the same level, a gas-conducting pipe communicating with said catcher near the top thereof, and a spray-pipe arranged in said catcher near the top thereof.

2. An attachment for blast-furnaces for the purpose specified comprising two pairs of hollow extensions adapted to communicate with the furnace, a primary and a secondary conducting-pipe communicating with one pair of said hollow extensions, a primary and a secondary conducting-pipe communicating with the other pair of said hollow extensions, a furnace-stock catcher into which said pair of primary conducting-pipes open, a furnacestock collector communicating with the furnace-stock catcher and into which said pair 'of secondary conducting-pipes open, said collector and catcher containing-a body of water of .the same level, a gas-conducting pipe communicating with said catcher, near the top thereof, and a spray-pipe arranged n said catcher near the top thereof.

3. An attachment for blast-furnaces comprising a plurality of hollow extensions adapted to communicate with the blast-furnace, a pair of primary conducting-pipes opening directly into two of said hollow extensions, a pair of secondary conductingpipes opening into the same pair of hollow extensions, branch pipes communicating with the said pairs of primary conductingpipes for establishing communication between the said pipes and the other hollow extensions, a furnace-stock catcher communicating with said pair of primary conductingpipes and containing a body of water, and a furnace-stock collector communicating with said furnace-stock catcher and with the said pair of secondary conducting-pipes and containing a body of water.

4. An attachment for blast-furnaces com- IIO prising a plurality of hollow extensions adapted to communicate with the blast-furnace, a pair of primary conducting-pipes opening directly into two of said hollow extensions, a pair of secondary conductingpipes opening into the same pair of hollow extensions, branch pipes communicating with the said pairs of primary conductingpipes for establishing communication between the said pipes and the other hollow extensions, a furnace-stock catcher communicating with said pair of primary conductingpipes and containing a body of water, a furnace-stock collector communicating with said furnace-stock catcher and with the said pair of secondary conducting-pipes and con taining a body of water, a water-spray arranged in said furnace-stock catcher near the top thereof, and a gas-conducting ipe communicating with the furnace-stoc catcher near the top thereof.

5. An attachment for gas-furnaces comprising a pair of primary conducting-pipes adapted to communicate with the furnace at the top thereof, a pair of secondary conducting-pipes adapted to communicate with the furnace at the top thereof, a furnacestock catcher communicating with said pair of primary conducting-pipes, a furnacestock collector communicating with said furnacestock catcher and with said pair of secondary conducting-pipes, and means arranged in the furnace-stock catcher for causing the dis charge of the furnace-stock by gravity from the catcher into the collector.

6. An attachment for gas-furnaces comprising a pair of primary conducting-pipes adapted to communicate with the furnace at the top thereof, a pair of secondary conducting-pipes adapted to communicate with the furnace at the top thereof, a furnacestock catcher communicating with said pair of primary conducting-pipes, a furnace-stock collector communicating with said furnacestock catcher and with said pair of secondary conducting-pipes, means arranged in the furnace-stock catcher for causing the discharge of the furnace-stock by gravity from the catcher into the collector, said catcher and collector containing a body of water, a spraypipe arranged in the furnace-stock catcher, and a gas-conducting pipe communicating with the furnace-stock catcher near the top thereof.

7. An attachment for blast-furnaces comprising a plurality of primary conductingpipes adapted to communicate with the furnace, a furnace-stock catcher into which the said pipes open, afurnace-stock collector communicating with the furnace-stock catcher, a pair of secondary conducting-pipes communicating with the collector and adapted to communicate with the furnace, and a regulable water-supply means for said furnace stock catcher.

8. An attachment for blast-furnaces for the purpose specified comprising two pairs of hollow extensions adapted to communicate with the furnace, a primary and a secondary conducting-pipe communicating with one pair of said hollow extensions, a primary and a secondary conducting-pipe communicating with the other pair of said hollow extensions, a furnacestock catcher into which said pair of primary conducting-pipes open, a furnacestock collector communicating with the furnace-stock catcher and into which said pair of secondary conducting-pipes open, and a regulable water-supply means for said furnace-stock catcher.

9. An attachment for blast-furnaces for the purpose specified comprising two pairs of hollow extensions adapted to communicate with the furnace, a primary and a secondary conducting-pipe communicating with one pair of said hollow extensions, a primary and a secondary conducting-pipe communicating with the other pair of said hollow extensions, a furnace-stock catcher into which said pair of primary conducting-pipes open, a furnacestock collector communicating with the furnace-stock catcher and into which said pair of secondary conductingpipes open, said collector and catcher containing a body of water of the same level, a gas-conducting pipe communicating with said catcher near the top thereof, a spray-pipe arranged in said catcher near the top thereof, and a regulable water-supply means for said furnace-stock catcher.

10. An attachment for gas-furnaces comprising a pair of primary conducting-pipes adapted to communicate with the furnace at the top thereof, a pair of secondary conducting-pipes adapted to communicate with the furnace at the top thereof, a furnace-stock catcher communicating with said pair of primary conducting-pipes, a furnace-stock collector communicating with said furnacestock catcher and with said pair of secondary conducting-pipes, means arranged in the furnace-stock catcher for causing the discharge of the furnace-stock by gravity from the catcher into the collector, and a regulable water-supply means for said furnace-stock catcher.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CHARLES ABERCROMBIE.

Witnesses:

W. S. BURINGER, WILLIAM J. EBKEN.

ICC 

